UNRAVELING THE ROLE OF LONG NON-CODING RNAS IN HUMAN STEM CELL DIFFERENTIATION

Abstract

Stem cell differentiation is a tightly regulated process critical to embryonic development, tissue regeneration, and cellular identity, with gene expression governed at multiple regulatory levels. Among the emerging regulators of this process are long non-coding RNAs (lncRNAs), which modulate epigenetic states, transcription, and post-transcriptional gene networks. This study aimed to investigate the functional role of lncRNAs in human stem cell differentiation using an integrative multi-omics approach. Differential expression analysis from RNA-seq datasets revealed significant upregulation of lncRNAs such as NEAT1, LINC00458, and H19 during lineage commitment. Epigenetic profiling demonstrated dynamic changes in histone acetylation (H3K27ac) and DNA methylation at lncRNA promoters, correlating with transcriptional activation. RNA immunoprecipitation assays identified key chromatin modifiers (e.g., EZH2, DNMT1) as binding partners of these lncRNAs. The use of CRISPR editing led to clear differences in the levels of lineage markers, a change which was verified by both flow cytometry and qRT-PCR. Additionally, nerawork revealed that NEAT1 and Lnc-Rewind have high centrality, suggesting they could be major regulators in the network. Analysis of gene ontology revealed that these lncRNAs are associated with neurogenesis, the development of muscle cells in the heart and muscle differentiation. By using 10 well-drawn pictures and 8 comprehensive tables, the authors clearly showed how these molecular ties shaped what a cell became. Combined, these findings underline the main role of lncRNAs in managing stem cell differentiation and suggest new options for addressing disease and regenerative medicine. Thanks to this work, we now better understand how non-coding RNAs function and see more reasons to include lncRNAs in future stem cell treatments.